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Fuzzy vertical handoff method for personalized services of terminal in heterogeneous network

A vertical switching and heterogeneous network technology, applied in access restriction, electrical components, wireless communication, etc., can solve the problems of not considering the change of load status at the time of switching, and the inability to effectively guarantee network availability, etc., and achieve the effect of reducing the blocking rate

Active Publication Date: 2017-02-15
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology

However, the author only screens the network based on the load status at the decision time, without considering the load status change at the switching time, which cannot effectively guarantee the availability of the selected network at the switching time

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  • Fuzzy vertical handoff method for personalized services of terminal in heterogeneous network
  • Fuzzy vertical handoff method for personalized services of terminal in heterogeneous network
  • Fuzzy vertical handoff method for personalized services of terminal in heterogeneous network

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Embodiment Construction

[0051] The technical solutions in the embodiments of the present invention will be described clearly and in detail below with reference to the drawings in the embodiments of the present invention. The described embodiments are only some of the embodiments of the invention.

[0052] Technical scheme of the present invention is as follows:

[0053] This method comprehensively considers the impact of dynamic changes in network load status on handover performance and the different requirements of different types of applications for QoS parameters. Select Switch Network.

[0054] The vertical switching method that the present invention proposes comprises the following steps:

[0055] Step 1. Firstly, the application types are divided into four types according to the 3GPP standard, which are conversational applications, interactive applications, streaming applications, and background applications, and then select the four parameters of bandwidth, delay, jitter, and packet loss rat...

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Abstract

The invention requests to protect a fuzzy vertical handoff method for personalized services of a terminal in a heterogeneous network. According to the method, aiming at differences of requirements of different types of applications in the terminal on quality of services (QoS), influence of dynamic variation of a network load state on handoff performance is considered, performance optimization is performed from two aspects: firstly, at a network finding stage, candidate networks are screened by forecasting load states of the candidate networks at handoff time; and then at a handoff judgment stage, different subordinating degree functions are designed according to different requirement ranges of each type of applications on QoS parameters. Experimental results show that the method can effectively reduce a handoff blocking rate and improve throughput of a system, and can also reasonably select the handoff network according to the application type of the terminal, thus meeting requirements on the personalized services of the terminal.

Description

technical field [0001] The invention belongs to a vertical switching method in a heterogeneous wireless network and belongs to the field of mobile communication. In particular, it concerns a method for vertical switching using load forecasting and fuzzy reasoning. Background technique [0002] In a heterogeneous wireless network, the handover that occurs when the connection of a terminal changes from one network to another is called a vertical handover. Vertical handover technology is one of the key technologies of mobility management in heterogeneous wireless networks, which is directly related to the quality of service of users. At present, most of the researches on vertical handoff methods are based on definite and precise parameter information. However, in vertical handoff, user preferences and the importance of parameters are somewhat ambiguous. In addition, measurement errors and the network itself The dynamic nature of will also lead to ambiguity in the obtained att...

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Application Information

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IPC IPC(8): H04W36/14H04W36/30H04W48/18
CPCH04W36/14H04W36/30H04W48/18
Inventor 马彬张文静
Owner CHONGQING UNIV OF POSTS & TELECOMM
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